# What Actually Wins at IDR Arbitration
Federal IDR is baseball style arbitration: you submit a number, the insurer submits a number, and a certified arbitrator must pick one. There is no splitting the difference. This format rewards the side whose number is better supported, and as a surgeon who has been on the filing side of this process, I can tell you the winning submissions share a recognizable anatomy.
Start from the insurer's number: the QPA
The insurer's offer is anchored to its qualifying payment amount, the QPA, a figure the insurer itself calculates from its own contracted rates. Your submission's job is to demonstrate why the value of this specific service exceeds that figure. The federal data shows arbitrators are persuadable: 87 percent of award amounts come in above the QPA, and the median provider win runs roughly 4.5 times the in network rate. The QPA is a starting bid, not a ceiling, and treating it as authoritative is the first mistake weak submissions make.
The four evidence categories that move arbitrators
First, benchmark market rates. Data from recognized independent databases such as FAIR Health showing what the procedure actually commands in your geography. This is the spine of the submission.
Second, case complexity. The operative details that distinguish this case from the average: comorbidities, revision status, duration, technique. Arbitrators are comparing offers against the value of the service actually rendered, and complexity is where a surgical practice's documentation either works for it or does not.
Third, the physician's training and experience. Board certification, fellowship training, and specialty depth are explicitly relevant to the value determination. A fellowship trained spine surgeon's time is not priced like the median.
Fourth, your history with the payer. Previously contracted rates with this insurer are powerful, because they are the insurer's own prior admission of what your work is worth.
The structural rule that outweighs all of it: one claim per CPT
The strongest evidence cannot save a badly structured filing. Federal rules require each CPT code filed as its own dispute, with narrow exceptions, because each code has its own benchmarks and its own QPA. Batched submissions force the arbitrator to resolve ambiguity, and ambiguity resolves against the filer. A 2023 federal ruling in Texas Medical Association v HHS addressed exactly this problem. One claim per CPT is not a preference at Kronos. It is the rule of the game, and we never break it.
What this means for your practice
A winning IDR operation is an evidence assembly line: benchmark data pulled per code and geography, clinical narrative built from the operative note, credentials and payer history attached, one dispute per CPT, every deadline tracked. None of it is exotic. All of it must happen on every claim, every time, which is precisely why so few practices capture what the process offers.
Want to see what a properly evidenced dispute looks like built from your own paper? Send 3 to 5 recent EOBs and we will show you the recovery math and the evidence available on each claim.